Chain rankings reflect unweighted aggregate unit sales for the week ending December 11 from four national bookselling chains only, and which represent
about 2,225 selling locations.

Independent rankings reflect sales figures for the week ending December 11 at many hundreds of independently owned general interest bookstores nationwide. Sales for this list are statistically weighted to represent
sales in all such outlets nationwide.

Excluded from both sets of rankings are sales reported from wholesalers,
small local chains and regional bookselling chains. An asterisk (*) indicates that a book's sales are barely distinguishable from those of the book above. A dagger (+) indicates that some bookstores report receiving bulk orders for a book.